Lebreoht steinmijller and carl steinmuller



(No Model.)

L'. apo. sT-BNML-LBP..

Y VSTEAM GENERATOR. No. 418,826. Patented-Jan. 7,1890.

QGOGOGOGO N. PETERS. Phnm-Lilhvgnphsr, wnhington. D. I;

A upper boilers.

UNITEDv STATES PATENT Gruen.

vLEBRECHT STEINMLLER AND CARL STEINMLLER, OF GUMMERSBACH,

GERMANY.

STEAM-G EN ERATOR.

SPECIFICATION forming part of Letters Patent No. 418,826, dated January '7, 1890.

AIPlication filed 'August 6, 1889. Serial No. 319,864. (No model.) Patented in England August 9, 1884:, No. 11,105, and in Germany May 13, 188e, No. 37.442.

To albwhom t may concern:

Be it known that we, LEBRECHT STEINML- LER and CARL STEINMLLER, subjects of the Emperor of Germany, residing at Gummersbach, iu the German Empire, have invented certain new and useful Improvements in and connected With Steam-Generators, (for which we have obtained patents in England, No.

11,105, dated August 9, 1881, and in Germany, No. 37,442, dated "May 13, 1886;) and we do` Lon the application of external heat.

Our invention relates to the construction.

of, the tube end junction.- boxes or waterchambers, to the arrangement of stays therefor, and to the method of xing the covers ot' the tube access-holes.

In the annexed drawings, Figure 1 is a half front elevation to the left of a tube-plate and to the right of a front' plate. A Figs. 2 and 3 are respectively a vertical section and a sectional plan of a junction-box and tubes. Figs. 4 and 5 are respectively .a front elevation and cross-section ona larger scale of part of a box. Fig. y6 is a front elevation, and Fig. 7 a section, of part of a box connected to two Figs. 8 and 9 are the same views, but with only one upper boiler. Figs. 10 and 11jare the same views, but showing a diierent method of connection.

Similar letters indicate similar parts in all the figures;

In orderto insure the freest and best-circulation in any chamber or vessel, it is essential that as few obstructions as possible be presented to the circulating liquid, and to this end instead of riveting or bolting to- ,gether the Wroughtfiron plates or cast-iron sections, as heretofore, according to our inwhile great strength and durability are insured.

The manufacturing of the welded junctionbox or water-chamber is done in the following way: Plate A, forming the top base and sides,'is beaten exactly into the form ot the water-chamber which is tobe manufactured, and the tube-plate T and the front plate S, after having been out into the same form, are connected with plate A by screws in such a way that the three parts T A S cannot alter their position against each other, and T and S lie iiat upon the edges of A. The plates T and S are then joined to A by ordinary welding, the three parts thus forming one welded piece.

The connection between the welded boxes o r water-chambers and the top boiler C can be effected in diierent ways: irst, either by riveting the water-chamber direct to the top boiler by means of an angle-iron, as in Figs. 1, 2, 8, ,and 9, or by langing the plates T A S, as in Figs. 6 and 7; second,` by riveting t-he water-chamber to a joint-piece J, which is connected with the top boiler C by riveting; third, in providing the water-chamber and the joint-piece J with angle-irons a a, which have then to be screwed together, as in Figs. lO and ll.

Boilers which are provided with two or more top boilers C C require water-chambers, the plate A of which has to be made of dierentparts A A', as illustrated in Figs. b' and 7. l j

' The water-tubes t t are fixed in the usual manner in the tube-plate T, and in the front plate S, opposite each tube end, access-holes s are drilled of rather larger diameter than the tubes, and for each hole s a cover or lid Z is provided of circular or other cbnvenient shape, either fiat or convex, and adapted to make steam-tight joints.

The stays u u are arranged in horizontal lines and between each tube t, and 4we utilize these stays u u to fix the covers Z Z as follows: The stays are extended through the front plate S, and have screwed ends provided with nuts u u. To each stay a plate or clip V is applied, of such shape as to overlie the covers lat either side, and by the nuts and clips the said covers l can be screwed up against the plate S, and steam-tight joints can readily be made, while at the same time the tubes are easily accessible for cleaning and removal, when required.

Vhat we claim as our invention, and desire to secure by Letters Patent, is#

The combination, with the tube end junction-box provided with tube-holes and with access-holes opposite said tube-holes, of the covers for the access-holes, the stays between the tube-l1oles, and the clips removably secured to the projecting' ends of said stays and bearing against the adjacent covers, substantially as and for the purpose set forth.

In testimony whereof we aiix our signatures in the presence of two witnesses.

LEBRECHT STEINMULLER. CARL STEINMULLER. W itn esses:

JUL. OVERTROFF, P. VISSEUR. 

